Poslední příspěvky

  • Maximally Flat Waveforms Operation of Class-F Power Amplifiers 

    Rudiakova, A.; Krizhanovski, V. (Společnost pro radioelektronické inženýrství, 2001-04)
    The requirements to output network's impedance on higher harmonic components and appropriate input driving for formation maximally flat waveforms of drain current and voltage were presented. Using such waveforms allows ...
  • Measuring of Track Velocity and Drift Angle 

    Hanousek, K. (Společnost pro radioelektronické inženýrství, 2001-04)
    The fundamental problem of air navigation in real meteorological conditions is the fact that the aircraft is all the flight time under the action of wind causing its drifting and changing its velocity. Detailed exploration ...
  • Efficient Algorithms of Direct and Inverse First-Order S-Z Transformations 

    Zaplatilek, K.; Lares, M. (Společnost pro radioelektronické inženýrství, 2001-04)
    In the article, we describe principles of numerical algorithms by means of which coefficients of continuous-time and discrete-time frequency filters are possible to transform each other for several s-z trans-formations. ...
  • Trigonometric Approximation in Fractal Image Coding 

    Candik, M. (Společnost pro radioelektronické inženýrství, 2001-04)
    In this paper is presented a new approach in fractal image coding based on trigonometric approximation. The least square approximation method is used for approximation of blocks in standard fractal image compression ...
  • Line Fitting Using Hough-Like Procedure 

    Turan, J.; Farkas, P. (Společnost pro radioelektronické inženýrství, 2001-04)
    The Hough Transform is an image processing algorithm which is used to extract geometric primitives from digital images. It has a number of desirable properties, typically robustness to noise and data occlusion. In this ...
  • Adaptive Order-Statistic LMS Filters 

    Hudec, R.; Marchevsky, S. (Společnost pro radioelektronické inženýrství, 2001-04)
    The LMS-based adaptive order-statistic filters are presented in this paper. The adaptive Ll-filters as extension of the adaptive L-filter for two-dimensional filtering of noisy greyscale images is studied too. Their ...
  • Extension of Impulse Detectors to Spatial Dimension and their Utilization as Switch in the LMS L-SD Filter 

    Hudec, R.; Marchevsky, S. (Společnost pro radioelektronické inženýrství, 2001-04)
    In this paper, one kind of adaptive LMS filters based on order statistics is used for two-dimensional filtration of noisy greyscale images degraded by mixed noise. The signal-dependent adaptive LMS L-filter (L-SD) consists ...
  • Design of Boolean LUM Smoothers through Permutation Coloring Concept 

    Lukac, R.; Marchevsky, S. (Společnost pro radioelektronické inženýrství, 2001-04)
    Rank-order based LUM (lower-upper-middle) smoothers distinguishes by wide range of smoothing characteristics given by filter parameter. Thus, for the capability to achieve the best balance between noise suppression and ...